<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>角色管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="addRightDialogVisible = true">添加角色</el-button>
        </el-col>
      </el-row>
    </el-card>

    <el-table :data="rolesList" border stripe>
      <el-table-column type="expand">
        <template slot-scope="scope">
          <el-row
            :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']"
            v-for="(item1, i1) in scope.row.children"
            :key="item1.id"
          >
            <el-col :span="5">
              <el-tag closable @close="removeRightById(scope.row, item1.id)">{{item1.authName}}</el-tag>
              <i class="el-icon-caret-right"></i>
            </el-col>
            <el-col :span="19">
              <el-row
                :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']"
                v-for="(item2, i2) in item1.children"
                :key="item2.id"
              >
                <el-col :span="6">
                  <el-tag
                    type="success"
                    closable
                    @close="removeRightById(scope.row, item2.id)"
                  >{{item2.authName}}</el-tag>
                  <i class="el-icon-caret-right"></i>
                </el-col>
                <el-col :span="18">
                  <el-tag
                    type="warning"
                    v-for="(item3) in item2.children"
                    :key="item3.id"
                    closable
                    @close="removeRightById(scope.row, item3.id)"
                  >{{item3.authName}}</el-tag>
                </el-col>
              </el-row>
            </el-col>
          </el-row>
        </template>
      </el-table-column>
      <el-table-column label="#" type="index"></el-table-column>
      <el-table-column label="角色名称" prop="roleName"></el-table-column>
      <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
      <el-table-column label="操作" width="300px">
        <template slot-scope="scope">
          <el-button size="mini" type="primary" icon="el-icon-edit">编辑</el-button>
          <el-button size="mini" type="danger" icon="el-icon-delete">删除</el-button>
          <el-button
            size="mini"
            type="warning"
            icon="el-icon-setting"
            @click="showSetRightDialog(scope.row)"
          >分配权限</el-button>
        </template>
      </el-table-column>
    </el-table>

    <el-dialog
      title="添加角色"
      :visible.sync="addRightDialogVisible"
      width="50%"
      @close="addRightDialogClosed()"
    >
      <el-form ref="addRightFormRef" :model="addRightForm" :rules="addRightFormRules">
        <el-form-item label="角色名称" label-width="100px" prop="roleName">
          <el-input v-model="addRightForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" label-width="100px" prop="roleDesc">
          <el-input v-model="addRightForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addRightDialogVisible = false">取消</el-button>
        <el-button type="primary" @click="addRight()">确定</el-button>
      </span>
    </el-dialog>

    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed()"
    >
      <el-tree
        ref="treeRef"
        :data="rightList"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defKeys"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights()">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  created() {
    this.getRoleList()
  },
  data() {
    return {
      role: {},
      rolesList: [],
      addRightDialogVisible: false,
      setRightDialogVisible: false,
      rightList: [],
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      defKeys: [],
      addRightForm: {
        roleName: '',
        roleDesc: ''
      },
      addRightFormRules: {
        roleName: [
          { required: true, message: '角色名不能为空', trigger: 'blur' }
        ],
        roleDesc: [
          { required: true, message: '角色描述不能为空', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    async getRoleList() {
      const { data: result } = await this.$http.get('/roles')
      if (result.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }

      this.rolesList = result.data
    },
    addRight() {
      this.$refs.addRightRef.validate(async valid => {
        if (valid) {
          const { data: result } = await this.$http.post('/roles', this.addRightForm)
          if (result.status === 200) {
            this.$message.success('添加角色成功！')
            this.addRightDialogVisible = false
            this.getRoleList()
          } else {
            this.$message.error('添加角色失败！')
          }
        }
      })
    },
    removeRightById(role, rightId) {
      this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async () => {
        const { data: result } = await this.$http.delete(`/roles/${role.id}/rights/${rightId}`)
        if (result.status === 200) {
          role.children = result.data
        }
        this.$message.success('删除成功！')
      }).catch(() => {
        this.$message.info('已取消删除')
      })
    },
    async showSetRightDialog(role) {
      this.roleId = role.id
      this.role = role
      const { data: result } = await this.$http.get('/rights/tree')
      if (result.status === 200) {
        this.rightList = result.data

        const { data: rightsResult } = await this.$http.get(`/roles/${role.id}/rights`)
        if (rightsResult.status === 200) {
          if (rightsResult.data != null) {
            this.defKeys = this.getLeafKeys(rightsResult.data)
          }
          this.setRightDialogVisible = true
        }
      }
    },
    getLeafKeys1(node, arr) {
      if (node.children.length === 0) {
        return arr.push(node.id)
      }

      node.children.forEach(item => this.getLeafKeys(item, arr))
    },
    getLeafKeys(rights) {
      const selKeys = []
      rights.forEach(item => {
        selKeys.push(item.id)
      })
      return selKeys
    },
    addRightDialogClosed() {
      // TODO
    },
    setRightDialogClosed() {
      this.defKeys = []
    },
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]

      const ids = keys.join(',')
      const { data: result } = await this.$http.post(`/roles/${this.role.id}/rights`, { rids: ids })
      if (result.status === 200) {
        this.role.children = result.data
        this.setRightDialogVisible = false
      }
    }
  }
}
</script>

<style scoped lang="less">
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
